5-262-10-108-001

A double-wall U-tube bundle gives this configuration the thermal and mechanical margin expected of Diamondback DSU/DWU equipment in steam-to-liquid heating with cross-contamination protection. An atmospheric air gap between the inner and outer tube vents any breach to the outside, giving a visible telltale leak instead of silent mixing. Dimensionally it is a 10-inch shell unit, 108-inch shell length in a 2-pass arrangement. It carries 3/4-inch O.D. tubes. As furnished, materials include cast iron bonnets, steel shell, copper (double wall) tubes, and naval brass tubesheets. On the ratings side, expect 150 PSI on the shell side, 125 PSI on the tube side, and 375°F maximum temperature. Installations range across potable water heating, food and beverage process heating, and domestic hot water where codes require double-wall separation. This build is designated 5-262-10-108-001.